grsec: Apply grsecurity-3.0-3.2.64-201411062032.patch

commit 45244eed041187d7d0646fc706b5b6aa42cfb0f5
Author: Brad Spengler <spender@grsecurity.net>
Date:   Thu Nov 6 19:32:02 2014 -0500

    add additional unnecessary checks

 kernel/trace/trace_syscalls.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

commit 4a99fd4808d62e255d9ca9eee53b22548409b184
Author: Brad Spengler <spender@grsecurity.net>
Date:   Thu Nov 6 19:26:53 2014 -0500

    add additional unnecessary checks

 kernel/trace/trace_syscalls.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

commit 8a0f199e3ee0e27d0ec77b508f8fedbfd4b416c3
Author: Rabin Vincent <rabin@rab.in>
Date:   Wed Oct 29 23:06:58 2014 +0100

    tracing/syscalls: Ignore numbers outside NR_syscalls' range

    ARM has some private syscalls (for example, set_tls(2)) which lie
    outside the range of NR_syscalls.  If any of these are called while
    syscall tracing is being performed, out-of-bounds array access will
    occur in the ftrace and perf sys_{enter,exit} handlers.

     # trace-cmd record -e raw_syscalls:* true && trace-cmd report
     ...
     true-653   [000]   384.675777: sys_enter:            NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
     true-653   [000]   384.675812: sys_exit:             NR 192 = 1995915264
     true-653   [000]   384.675971: sys_enter:            NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
     true-653   [000]   384.675988: sys_exit:             NR 983045 = 0
     ...

     # trace-cmd record -e syscalls:* true
     [   17.289329] Unable to handle kernel paging request at virtual address aaaaaace
     [   17.289590] pgd = 9e71c000
     [   17.289696] [aaaaaace] *pgd=00000000
     [   17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
     [   17.290169] Modules linked in:
     [   17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
     [   17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
     [   17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
     [   17.290866] LR is at syscall_trace_enter+0x124/0x184

    Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.

    Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
    added the check for less than zero, but it should have also checked
    for greater than NR_syscalls.

    Link: http://lkml.kernel.org/p/1414620418-29472-1-git-send-email-rabin@rab.in

    Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
    Cc: stable@vger.kernel.org # 2.6.33+
    Signed-off-by: Rabin Vincent <rabin@rab.in>
    Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

    Conflicts:

    	kernel/trace/trace_syscalls.c

 kernel/trace/trace_syscalls.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

Signature-tree: 3afedb9e582408f6f0945eb92bd5535f96f7fbb0